I will be honest and say I do not fully understand how that stat works, but Suppan before his injury with a mid 4 ERA obviously has more value than a guy who is hitting under .200. Then you look at who we have to replace the two players. Suppan we have Villy, Burns, and McClung, and for Hall we have Gamel, McGehee, Heether and Counsell. Hall had no value to this team where Suppan does.